短语词组用作動詞 (v.)～+副詞tug hard 用力拖tug nervously 緊張地拉tug repeatedly 反複拉tug along 拖著往前走～+介詞tug at 拉,拖tug onto 拖上,拖到tug round the garden 繞著花園拖短語 返回 tugs